BTS 1 Litre 200 Bar Steel Cylinder with Top Handled DIN Valve S16116676 1 Litre 200 Bar ECS - Eurocylinder Steel Cylinder complete with M18 Top Handled 230 Bar G5/8 DIN Outlet Valve for use with Regulator 1st Stages with Standard Male 232 Bar DIN Thread. For use with normal Breathing Air, all O-Rings are Viton ready for O2 cleaning for use with Nitrox. Cylinder Measures 265mm in length with a Diameter of 83mm, weighs 1.94 Kgs plus Valve, buoyancy of -0.85 Kgs in Sea Water & -0.96 Kgs in Fresh Water when Fully Charged.